refac: migration crash, real-database tests, site deleted during create, ruels out of the repo, lists

internal/domain/article/articleLocalization.go

@@ -18,6 +18,7 @@ var (
 	ErrInvalidTranslation  = errors.New("the translation request is not valid")
 	ErrStoryMoveRequired   = errors.New("the story must be moved as a whole")
 	ErrSlugConflict        = errors.New("an address already exists on the destination site")
+	ErrTargetSiteDeleted   = errors.New("the target site was deleted while the article was being created")
 )
 
 const (